Home / 100,867.13-151,159.09-79,714.18

Finding the Fourth Proportional to 100,867.13, 151,159.09 and 79,714.18

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Solution

The fourth proportional to 100,867.13, 151,159.09 and 79,714.18 is: 119,459.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,867.13 : 151,159.09 = 79,714.18 : x
  2. Step 2: Convert to fraction form
    100,867.13/151,159.09 = 79,714.18/x
  3. Step 3: Cross multiply
    100,867.13x = 151,159.09 × 79,714.18
  4. Step 4: Simplify right side
    100,867.13x = 12,049,522,908.90
  5. Step 5: Solve for x
    x = 12,049,522,908.90/100,867.13
  6. Step 6: Final answer
    x = 119,459.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.